-89.44% is the change from 142 to 15
Calculation steps:
[( 15 - 142 ) ÷ 142] x 100 = -89.44%
Formula
Percentage change = [(15 - 142) / 142] x 100
Subtract the new number by the original number
15 - 142 = -127
-127 ÷ 142 = -0.8943661971830986
-0.8943661971830986 x 100 = -89.44%