-85.38% is the change from 971 to 142
Calculation steps:
[( 142 - 971 ) ÷ 971] x 100 = -85.38%
Formula
Percentage change = [(142 - 971) / 971] x 100
Subtract the new number by the original number
142 - 971 = -829
-829 ÷ 971 = -0.8537590113285273
-0.8537590113285273 x 100 = -85.38%