-15.52% is the change from 870 to 735
Calculation steps:
[( 735 - 870 ) ÷ 870] x 100 = -15.52%
Formula
Percentage change = [(735 - 870) / 870] x 100
Subtract the new number by the original number
735 - 870 = -135
-135 ÷ 870 = -0.15517241379310345
-0.15517241379310345 x 100 = -15.52%