-76.13% is the change from 507 to 121
Calculation steps:
[( 121 - 507 ) ÷ 507] x 100 = -76.13%
Formula
Percentage change = [(121 - 507) / 507] x 100
Subtract the new number by the original number
121 - 507 = -386
-386 ÷ 507 = -0.7613412228796844
-0.7613412228796844 x 100 = -76.13%