1005% is the change from 20 to 221
Calculation steps:
[( 221 - 20 ) ÷ 20] x 100 = 1005%
Formula
Percentage change = [(221 - 20) / 20] x 100
Subtract the new number by the original number
221 - 20 = 201
201 ÷ 20 = 10.05
10.05 x 100 = 1005%
Example