-71.53% is the change from 274 to 78
Calculation steps:
[( 78 - 274 ) ÷ 274] x 100 = -71.53%
Formula
Percentage change = [(78 - 274) / 274] x 100
Subtract the new number by the original number
78 - 274 = -196
-196 ÷ 274 = -0.7153284671532847
-0.7153284671532847 x 100 = -71.53%