-94.48% is the change from 507 to 28
Calculation steps:
[( 28 - 507 ) ÷ 507] x 100 = -94.48%
Formula
Percentage change = [(28 - 507) / 507] x 100
Subtract the new number by the original number
28 - 507 = -479
-479 ÷ 507 = -0.9447731755424064
-0.9447731755424064 x 100 = -94.48%