-67.76% is the change from 850 to 274
Calculation steps:
[( 274 - 850 ) ÷ 850] x 100 = -67.76%
Formula
Percentage change = [(274 - 850) / 850] x 100
Subtract the new number by the original number
274 - 850 = -576
-576 ÷ 850 = -0.6776470588235294
-0.6776470588235294 x 100 = -67.76%