281.25% is the change from 240 to 915
Calculation steps:
[( 915 - 240 ) ÷ 240] x 100 = 281.25%
Formula
Percentage change = [(915 - 240) / 240] x 100
Subtract the new number by the original number
915 - 240 = 675
675 ÷ 240 = 2.8125
2.8125 x 100 = 281.25%