-67.73% is the change from 220 to 71
Calculation steps:
[( 71 - 220 ) ÷ 220] x 100 = -67.73%
Formula
Percentage change = [(71 - 220) / 220] x 100
Subtract the new number by the original number
71 - 220 = -149
-149 ÷ 220 = -0.6772727272727272
-0.6772727272727272 x 100 = -67.73%