-13.51% is the change from 148 to 128
Calculation steps:
[( 128 - 148 ) ÷ 148] x 100 = -13.51%
Formula
Percentage change = [(128 - 148) / 148] x 100
Subtract the new number by the original number
128 - 148 = -20
-20 ÷ 148 = -0.13513513513513514
-0.13513513513513514 x 100 = -13.51%