350% is the change from 50 to 225
Calculation steps:
[( 225 - 50 ) ÷ 50] x 100 = 350%
Formula
Percentage change = [(225 - 50) / 50] x 100
Subtract the new number by the original number
225 - 50 = 175
175 ÷ 50 = 3.5
3.5 x 100 = 350%
Example