-10% is the change from 970 to 873
Calculation steps:
[( 873 - 970 ) ÷ 970] x 100 = -10%
Formula
Percentage change = [(873 - 970) / 970] x 100
Subtract the new number by the original number
873 - 970 = -97
-97 ÷ 970 = -0.1
-0.1 x 100 = -10%
Example