-77.33% is the change from 344 to 78
Calculation steps:
[( 78 - 344 ) ÷ 344] x 100 = -77.33%
Formula
Percentage change = [(78 - 344) / 344] x 100
Subtract the new number by the original number
78 - 344 = -266
-266 ÷ 344 = -0.7732558139534884
-0.7732558139534884 x 100 = -77.33%