-23.08% is the change from 156 to 120
Calculation steps:
[( 120 - 156 ) ÷ 156] x 100 = -23.08%
Formula
Percentage change = [(120 - 156) / 156] x 100
Subtract the new number by the original number
120 - 156 = -36
-36 ÷ 156 = -0.23076923076923078
-0.23076923076923078 x 100 = -23.08%