-73.25% is the change from 157 to 42
Calculation steps:
[( 42 - 157 ) ÷ 157] x 100 = -73.25%
Formula
Percentage change = [(42 - 157) / 157] x 100
Subtract the new number by the original number
42 - 157 = -115
-115 ÷ 157 = -0.732484076433121
-0.732484076433121 x 100 = -73.25%