-87.73% is the change from 220 to 27
Calculation steps:
[( 27 - 220 ) ÷ 220] x 100 = -87.73%
Formula
Percentage change = [(27 - 220) / 220] x 100
Subtract the new number by the original number
27 - 220 = -193
-193 ÷ 220 = -0.8772727272727273
-0.8772727272727273 x 100 = -87.73%