87.5% is the change from 48 to 90
Calculation steps:
[( 90 - 48 ) ÷ 48] x 100 = 87.5%
Formula
Percentage change = [(90 - 48) / 48] x 100
Subtract the new number by the original number
90 - 48 = 42
42 ÷ 48 = 0.875
0.875 x 100 = 87.5%
Example