-75.58% is the change from 344 to 84
Calculation steps:
[( 84 - 344 ) ÷ 344] x 100 = -75.58%
Formula
Percentage change = [(84 - 344) / 344] x 100
Subtract the new number by the original number
84 - 344 = -260
-260 ÷ 344 = -0.7558139534883721
-0.7558139534883721 x 100 = -75.58%