-63.25% is the change from 234 to 86
Calculation steps:
[( 86 - 234 ) ÷ 234] x 100 = -63.25%
Formula
Percentage change = [(86 - 234) / 234] x 100
Subtract the new number by the original number
86 - 234 = -148
-148 ÷ 234 = -0.6324786324786325
-0.6324786324786325 x 100 = -63.25%