-5.64% is the change from 975 to 920
Calculation steps:
[( 920 - 975 ) ÷ 975] x 100 = -5.64%
Formula
Percentage change = [(920 - 975) / 975] x 100
Subtract the new number by the original number
920 - 975 = -55
-55 ÷ 975 = -0.05641025641025641
-0.05641025641025641 x 100 = -5.64%