-49.64% is the change from 975 to 491
Calculation steps:
[( 491 - 975 ) ÷ 975] x 100 = -49.64%
Formula
Percentage change = [(491 - 975) / 975] x 100
Subtract the new number by the original number
491 - 975 = -484
-484 ÷ 975 = -0.49641025641025643
-0.49641025641025643 x 100 = -49.64%