-33.71% is the change from 976 to 647
Calculation steps:
[( 647 - 976 ) ÷ 976] x 100 = -33.71%
Formula
Percentage change = [(647 - 976) / 976] x 100
Subtract the new number by the original number
647 - 976 = -329
-329 ÷ 976 = -0.33709016393442626
-0.33709016393442626 x 100 = -33.71%