-83.71% is the change from 221 to 36
Calculation steps:
[( 36 - 221 ) ÷ 221] x 100 = -83.71%
Formula
Percentage change = [(36 - 221) / 221] x 100
Subtract the new number by the original number
36 - 221 = -185
-185 ÷ 221 = -0.8371040723981901
-0.8371040723981901 x 100 = -83.71%