-12.99% is the change from 870 to 757
Calculation steps:
[( 757 - 870 ) ÷ 870] x 100 = -12.99%
Formula
Percentage change = [(757 - 870) / 870] x 100
Subtract the new number by the original number
757 - 870 = -113
-113 ÷ 870 = -0.12988505747126436
-0.12988505747126436 x 100 = -12.99%