-85.07% is the change from 971 to 145
Calculation steps:
[( 145 - 971 ) ÷ 971] x 100 = -85.07%
Formula
Percentage change = [(145 - 971) / 971] x 100
Subtract the new number by the original number
145 - 971 = -826
-826 ÷ 971 = -0.850669412976313
-0.850669412976313 x 100 = -85.07%