-41.5% is the change from 147 to 86
Calculation steps:
[( 86 - 147 ) ÷ 147] x 100 = -41.5%
Formula
Percentage change = [(86 - 147) / 147] x 100
Subtract the new number by the original number
86 - 147 = -61
-61 ÷ 147 = -0.41496598639455784
-0.41496598639455784 x 100 = -41.5%