-75.92% is the change from 515 to 124
Calculation steps:
[( 124 - 515 ) ÷ 515] x 100 = -75.92%
Formula
Percentage change = [(124 - 515) / 515] x 100
Subtract the new number by the original number
124 - 515 = -391
-391 ÷ 515 = -0.7592233009708738
-0.7592233009708738 x 100 = -75.92%