-37.59% is the change from 870 to 543
Calculation steps:
[( 543 - 870 ) ÷ 870] x 100 = -37.59%
Formula
Percentage change = [(543 - 870) / 870] x 100
Subtract the new number by the original number
543 - 870 = -327
-327 ÷ 870 = -0.3758620689655172
-0.3758620689655172 x 100 = -37.59%