-30.24% is the change from 850 to 593
Calculation steps:
[( 593 - 850 ) ÷ 850] x 100 = -30.24%
Formula
Percentage change = [(593 - 850) / 850] x 100
Subtract the new number by the original number
593 - 850 = -257
-257 ÷ 850 = -0.3023529411764706
-0.3023529411764706 x 100 = -30.24%