-35.92% is the change from 142 to 91
Calculation steps:
[( 91 - 142 ) ÷ 142] x 100 = -35.92%
Formula
Percentage change = [(91 - 142) / 142] x 100
Subtract the new number by the original number
91 - 142 = -51
-51 ÷ 142 = -0.3591549295774648
-0.3591549295774648 x 100 = -35.92%