-42.59% is the change from 850 to 488
Calculation steps:
[( 488 - 850 ) ÷ 850] x 100 = -42.59%
Formula
Percentage change = [(488 - 850) / 850] x 100
Subtract the new number by the original number
488 - 850 = -362
-362 ÷ 850 = -0.4258823529411765
-0.4258823529411765 x 100 = -42.59%