-83.78% is the change from 974 to 158
Calculation steps:
[( 158 - 974 ) ÷ 974] x 100 = -83.78%
Formula
Percentage change = [(158 - 974) / 974] x 100
Subtract the new number by the original number
158 - 974 = -816
-816 ÷ 974 = -0.837782340862423
-0.837782340862423 x 100 = -83.78%