52% is the change from 225 to 342
Calculation steps:
[( 342 - 225 ) ÷ 225] x 100 = 52%
Formula
Percentage change = [(342 - 225) / 225] x 100
Subtract the new number by the original number
342 - 225 = 117
117 ÷ 225 = 0.52
0.52 x 100 = 52%
Example