-42.96% is the change from 270 to 154
Calculation steps:
[( 154 - 270 ) ÷ 270] x 100 = -42.96%
Formula
Percentage change = [(154 - 270) / 270] x 100
Subtract the new number by the original number
154 - 270 = -116
-116 ÷ 270 = -0.42962962962962964
-0.42962962962962964 x 100 = -42.96%