120% is the change from 240 to 528
Calculation steps:
[( 528 - 240 ) ÷ 240] x 100 = 120%
Formula
Percentage change = [(528 - 240) / 240] x 100
Subtract the new number by the original number
528 - 240 = 288
288 ÷ 240 = 1.2
1.2 x 100 = 120%
Example