-61.11% is the change from 234 to 91
Calculation steps:
[( 91 - 234 ) ÷ 234] x 100 = -61.11%
Formula
Percentage change = [(91 - 234) / 234] x 100
Subtract the new number by the original number
91 - 234 = -143
-143 ÷ 234 = -0.6111111111111112
-0.6111111111111112 x 100 = -61.11%