20% is the change from 750 to 900
Calculation steps:
[( 900 - 750 ) ÷ 750] x 100 = 20%
Formula
Percentage change = [(900 - 750) / 750] x 100
Subtract the new number by the original number
900 - 750 = 150
150 ÷ 750 = 0.2
0.2 x 100 = 20%
Example