200% is the change from 75 to 225
Calculation steps:
[( 225 - 75 ) ÷ 75] x 100 = 200%
Formula
Percentage change = [(225 - 75) / 75] x 100
Subtract the new number by the original number
225 - 75 = 150
150 ÷ 75 = 2
2 x 100 = 200%
Example