-84.11% is the change from 491 to 78
Calculation steps:
[( 78 - 491 ) ÷ 491] x 100 = -84.11%
Formula
Percentage change = [(78 - 491) / 491] x 100
Subtract the new number by the original number
78 - 491 = -413
-413 ÷ 491 = -0.8411405295315683
-0.8411405295315683 x 100 = -84.11%