-20.85% is the change from 235 to 186
Calculation steps:
[( 186 - 235 ) ÷ 235] x 100 = -20.85%
Formula
Percentage change = [(186 - 235) / 235] x 100
Subtract the new number by the original number
186 - 235 = -49
-49 ÷ 235 = -0.20851063829787234
-0.20851063829787234 x 100 = -20.85%