-33.61% is the change from 976 to 648
Calculation steps:
[( 648 - 976 ) ÷ 976] x 100 = -33.61%
Formula
Percentage change = [(648 - 976) / 976] x 100
Subtract the new number by the original number
648 - 976 = -328
-328 ÷ 976 = -0.3360655737704918
-0.3360655737704918 x 100 = -33.61%