220% is the change from 125 to 400
Calculation steps:
[( 400 - 125 ) ÷ 125] x 100 = 220%
Formula
Percentage change = [(400 - 125) / 125] x 100
Subtract the new number by the original number
400 - 125 = 275
275 ÷ 125 = 2.2
2.2 x 100 = 220%
Example