your survey is invalid, 80% of those who didn't vote obviously do not want any changes otherwise they would vote, rest who voted are 54% vs. 46%
if you want a change - do it, but don't claim it was voted for, let's see what happen with those 80% that haven't voted, will they leave or stay?
From what I can tell most of those 80% who didn't vote were inactive for quite some time. For sure they didn't either respond to the invitation to the survey nor to the reminder send out after some time. Thus I guess they already left or they didn't care. Nearly 20% response rate on a customer survey with this preconditions is very good and quite representative.