-56.1% is the change from 975 to 428
Calculation steps:
[( 428 - 975 ) ÷ 975] x 100 = -56.1%
Formula
Percentage change = [(428 - 975) / 975] x 100
Subtract the new number by the original number
428 - 975 = -547
-547 ÷ 975 = -0.561025641025641
-0.561025641025641 x 100 = -56.1%