In 2013 to 2014, Bitcoin crashed from $1000 to $200
From 2016 to March 2018 Bitcoin was:
$1,000 to $20,000
$20,000 to $6,500
$6500 to to $12,000
$12,000 to $7,500

Bitcoin is the most "feared investment" after going up from $1 to $10,000 in 9 years and big names saying bad things for Bitcoin and cryptos
For a correction,bitcoin is the trusted crypto currency as compared to other crypto currency.Do you have invested in any altcoin.If you had invested in altcoin means,you will know what is bitcoin.Many of the crypto currency is struggle to reach 700$,but the price of bitcoin is 7000$.This all reduction are just fluctuation of price due to some Fake news.