-84.88% is the change from 516 to 78
Calculation steps:
[( 78 - 516 ) ÷ 516] x 100 = -84.88%
Formula
Percentage change = [(78 - 516) / 516] x 100
Subtract the new number by the original number
78 - 516 = -438
-438 ÷ 516 = -0.8488372093023255
-0.8488372093023255 x 100 = -84.88%