-17.84% is the change from 970 to 797
Calculation steps:
[( 797 - 970 ) ÷ 970] x 100 = -17.84%
Formula
Percentage change = [(797 - 970) / 970] x 100
Subtract the new number by the original number
797 - 970 = -173
-173 ÷ 970 = -0.17835051546391753
-0.17835051546391753 x 100 = -17.84%