-84.35% is the change from 971 to 152
Calculation steps:
[( 152 - 971 ) ÷ 971] x 100 = -84.35%
Formula
Percentage change = [(152 - 971) / 971] x 100
Subtract the new number by the original number
152 - 971 = -819
-819 ÷ 971 = -0.84346035015448
-0.84346035015448 x 100 = -84.35%