-12.64% is the change from 870 to 760
Calculation steps:
[( 760 - 870 ) ÷ 870] x 100 = -12.64%
Formula
Percentage change = [(760 - 870) / 870] x 100
Subtract the new number by the original number
760 - 870 = -110
-110 ÷ 870 = -0.12643678160919541
-0.12643678160919541 x 100 = -12.64%