-49.03% is the change from 975 to 497
Calculation steps:
[( 497 - 975 ) ÷ 975] x 100 = -49.03%
Formula
Percentage change = [(497 - 975) / 975] x 100
Subtract the new number by the original number
497 - 975 = -478
-478 ÷ 975 = -0.49025641025641026
-0.49025641025641026 x 100 = -49.03%