-65.76% is the change from 850 to 291
Calculation steps:
[( 291 - 850 ) ÷ 850] x 100 = -65.76%
Formula
Percentage change = [(291 - 850) / 850] x 100
Subtract the new number by the original number
291 - 850 = -559
-559 ÷ 850 = -0.6576470588235294
-0.6576470588235294 x 100 = -65.76%