-59.09% is the change from 220 to 90
Calculation steps:
[( 90 - 220 ) ÷ 220] x 100 = -59.09%
Formula
Percentage change = [(90 - 220) / 220] x 100
Subtract the new number by the original number
90 - 220 = -130
-130 ÷ 220 = -0.5909090909090909
-0.5909090909090909 x 100 = -59.09%