-50.05% is the change from 975 to 487
Calculation steps:
[( 487 - 975 ) ÷ 975] x 100 = -50.05%
Formula
Percentage change = [(487 - 975) / 975] x 100
Subtract the new number by the original number
487 - 975 = -488
-488 ÷ 975 = -0.5005128205128205
-0.5005128205128205 x 100 = -50.05%