-56.82% is the change from 975 to 421
Calculation steps:
[( 421 - 975 ) ÷ 975] x 100 = -56.82%
Formula
Percentage change = [(421 - 975) / 975] x 100
Subtract the new number by the original number
421 - 975 = -554
-554 ÷ 975 = -0.5682051282051283
-0.5682051282051283 x 100 = -56.82%