-34.24% is the change from 850 to 559
Calculation steps:
[( 559 - 850 ) ÷ 850] x 100 = -34.24%
Formula
Percentage change = [(559 - 850) / 850] x 100
Subtract the new number by the original number
559 - 850 = -291
-291 ÷ 850 = -0.3423529411764706
-0.3423529411764706 x 100 = -34.24%