-45.19% is the change from 270 to 148
Calculation steps:
[( 148 - 270 ) ÷ 270] x 100 = -45.19%
Formula
Percentage change = [(148 - 270) / 270] x 100
Subtract the new number by the original number
148 - 270 = -122
-122 ÷ 270 = -0.45185185185185184
-0.45185185185185184 x 100 = -45.19%