-71.74% is the change from 276 to 78
Calculation steps:
[( 78 - 276 ) ÷ 276] x 100 = -71.74%
Formula
Percentage change = [(78 - 276) / 276] x 100
Subtract the new number by the original number
78 - 276 = -198
-198 ÷ 276 = -0.717391304347826
-0.717391304347826 x 100 = -71.74%