-30.12% is the change from 850 to 594
Calculation steps:
[( 594 - 850 ) ÷ 850] x 100 = -30.12%
Formula
Percentage change = [(594 - 850) / 850] x 100
Subtract the new number by the original number
594 - 850 = -256
-256 ÷ 850 = -0.30117647058823527
-0.30117647058823527 x 100 = -30.12%