87.5% is the change from 480 to 900
Calculation steps:
[( 900 - 480 ) ÷ 480] x 100 = 87.5%
Formula
Percentage change = [(900 - 480) / 480] x 100
Subtract the new number by the original number
900 - 480 = 420
420 ÷ 480 = 0.875
0.875 x 100 = 87.5%
Example