-15.09% is the change from 159 to 135
Calculation steps:
[( 135 - 159 ) ÷ 159] x 100 = -15.09%
Formula
Percentage change = [(135 - 159) / 159] x 100
Subtract the new number by the original number
135 - 159 = -24
-24 ÷ 159 = -0.1509433962264151
-0.1509433962264151 x 100 = -15.09%