-84.55% is the change from 220 to 34
Calculation steps:
[( 34 - 220 ) ÷ 220] x 100 = -84.55%
Formula
Percentage change = [(34 - 220) / 220] x 100
Subtract the new number by the original number
34 - 220 = -186
-186 ÷ 220 = -0.8454545454545455
-0.8454545454545455 x 100 = -84.55%