-36.94% is the change from 157 to 99
Calculation steps:
[( 99 - 157 ) ÷ 157] x 100 = -36.94%
Formula
Percentage change = [(99 - 157) / 157] x 100
Subtract the new number by the original number
99 - 157 = -58
-58 ÷ 157 = -0.36942675159235666
-0.36942675159235666 x 100 = -36.94%