21900% is the change from 1 to 220
Calculation steps:
[( 220 - 1 ) ÷ 1] x 100 = 21900%
Formula
Percentage change = [(220 - 1) / 1] x 100
Subtract the new number by the original number
220 - 1 = 219
219 ÷ 1 = 219
219 x 100 = 21900%
Example