-61.54% is the change from 221 to 85
Calculation steps:
[( 85 - 221 ) ÷ 221] x 100 = -61.54%
Formula
Percentage change = [(85 - 221) / 221] x 100
Subtract the new number by the original number
85 - 221 = -136
-136 ÷ 221 = -0.6153846153846154
-0.6153846153846154 x 100 = -61.54%