-31.84% is the change from 870 to 593
Calculation steps:
[( 593 - 870 ) ÷ 870] x 100 = -31.84%
Formula
Percentage change = [(593 - 870) / 870] x 100
Subtract the new number by the original number
593 - 870 = -277
-277 ÷ 870 = -0.31839080459770114
-0.31839080459770114 x 100 = -31.84%