-6.9% is the change from 145 to 135
Calculation steps:
[( 135 - 145 ) ÷ 145] x 100 = -6.9%
Formula
Percentage change = [(135 - 145) / 145] x 100
Subtract the new number by the original number
135 - 145 = -10
-10 ÷ 145 = -0.06896551724137931
-0.06896551724137931 x 100 = -6.9%