-94.09% is the change from 220 to 13
Calculation steps:
[( 13 - 220 ) ÷ 220] x 100 = -94.09%
Formula
Percentage change = [(13 - 220) / 220] x 100
Subtract the new number by the original number
13 - 220 = -207
-207 ÷ 220 = -0.9409090909090909
-0.9409090909090909 x 100 = -94.09%