-8.52% is the change from 951 to 870
Calculation steps:
[( 870 - 951 ) ÷ 951] x 100 = -8.52%
Formula
Percentage change = [(870 - 951) / 951] x 100
Subtract the new number by the original number
870 - 951 = -81
-81 ÷ 951 = -0.08517350157728706
-0.08517350157728706 x 100 = -8.52%