-48% is the change from 975 to 507
Calculation steps:
[( 507 - 975 ) ÷ 975] x 100 = -48%
Formula
Percentage change = [(507 - 975) / 975] x 100
Subtract the new number by the original number
507 - 975 = -468
-468 ÷ 975 = -0.48
-0.48 x 100 = -48%
Example