-59.9% is the change from 975 to 391
Calculation steps:
[( 391 - 975 ) ÷ 975] x 100 = -59.9%
Formula
Percentage change = [(391 - 975) / 975] x 100
Subtract the new number by the original number
391 - 975 = -584
-584 ÷ 975 = -0.598974358974359
-0.598974358974359 x 100 = -59.9%