-22.9% is the change from 869 to 670
Calculation steps:
[( 670 - 869 ) ÷ 869] x 100 = -22.9%
Formula
Percentage change = [(670 - 869) / 869] x 100
Subtract the new number by the original number
670 - 869 = -199
-199 ÷ 869 = -0.2289988492520138
-0.2289988492520138 x 100 = -22.9%