-50.26% is the change from 975 to 485
Calculation steps:
[( 485 - 975 ) ÷ 975] x 100 = -50.26%
Formula
Percentage change = [(485 - 975) / 975] x 100
Subtract the new number by the original number
485 - 975 = -490
-490 ÷ 975 = -0.5025641025641026
-0.5025641025641026 x 100 = -50.26%