-65.86% is the change from 905 to 309
Calculation steps:
[( 309 - 905 ) ÷ 905] x 100 = -65.86%
Formula
Percentage change = [(309 - 905) / 905] x 100
Subtract the new number by the original number
309 - 905 = -596
-596 ÷ 905 = -0.6585635359116022
-0.6585635359116022 x 100 = -65.86%