20% is the change from 825 to 990
Calculation steps:
[( 990 - 825 ) ÷ 825] x 100 = 20%
Formula
Percentage change = [(990 - 825) / 825] x 100
Subtract the new number by the original number
990 - 825 = 165
165 ÷ 825 = 0.2
0.2 x 100 = 20%
Example