120% is the change from 180 to 396
Calculation steps:
[( 396 - 180 ) ÷ 180] x 100 = 120%
Formula
Percentage change = [(396 - 180) / 180] x 100
Subtract the new number by the original number
396 - 180 = 216
216 ÷ 180 = 1.2
1.2 x 100 = 120%
Example