-67.8% is the change from 851 to 274
Calculation steps:
[( 274 - 851 ) ÷ 851] x 100 = -67.8%
Formula
Percentage change = [(274 - 851) / 851] x 100
Subtract the new number by the original number
274 - 851 = -577
-577 ÷ 851 = -0.6780258519388954
-0.6780258519388954 x 100 = -67.8%