112.5% is the change from 288 to 612
Calculation steps:
[( 612 - 288 ) ÷ 288] x 100 = 112.5%
Formula
Percentage change = [(612 - 288) / 288] x 100
Subtract the new number by the original number
612 - 288 = 324
324 ÷ 288 = 1.125
1.125 x 100 = 112.5%
Example