-85.21% is the change from 507 to 75
Calculation steps:
[( 75 - 507 ) ÷ 507] x 100 = -85.21%
Formula
Percentage change = [(75 - 507) / 507] x 100
Subtract the new number by the original number
75 - 507 = -432
-432 ÷ 507 = -0.8520710059171598
-0.8520710059171598 x 100 = -85.21%