-61.09% is the change from 221 to 86
Calculation steps:
[( 86 - 221 ) ÷ 221] x 100 = -61.09%
Formula
Percentage change = [(86 - 221) / 221] x 100
Subtract the new number by the original number
86 - 221 = -135
-135 ÷ 221 = -0.6108597285067874
-0.6108597285067874 x 100 = -61.09%