-18.64% is the change from 971 to 790
Calculation steps:
[( 790 - 971 ) ÷ 971] x 100 = -18.64%
Formula
Percentage change = [(790 - 971) / 971] x 100
Subtract the new number by the original number
790 - 971 = -181
-181 ÷ 971 = -0.18640576725025745
-0.18640576725025745 x 100 = -18.64%