-83.68% is the change from 974 to 159
Calculation steps:
[( 159 - 974 ) ÷ 974] x 100 = -83.68%
Formula
Percentage change = [(159 - 974) / 974] x 100
Subtract the new number by the original number
159 - 974 = -815
-815 ÷ 974 = -0.8367556468172485
-0.8367556468172485 x 100 = -83.68%