-77.28% is the change from 515 to 117
Calculation steps:
[( 117 - 515 ) ÷ 515] x 100 = -77.28%
Formula
Percentage change = [(117 - 515) / 515] x 100
Subtract the new number by the original number
117 - 515 = -398
-398 ÷ 515 = -0.7728155339805826
-0.7728155339805826 x 100 = -77.28%