-85.4% is the change from 507 to 74
Calculation steps:
[( 74 - 507 ) ÷ 507] x 100 = -85.4%
Formula
Percentage change = [(74 - 507) / 507] x 100
Subtract the new number by the original number
74 - 507 = -433
-433 ÷ 507 = -0.854043392504931
-0.854043392504931 x 100 = -85.4%