-34.22% is the change from 976 to 642
Calculation steps:
[( 642 - 976 ) ÷ 976] x 100 = -34.22%
Formula
Percentage change = [(642 - 976) / 976] x 100
Subtract the new number by the original number
642 - 976 = -334
-334 ÷ 976 = -0.3422131147540984
-0.3422131147540984 x 100 = -34.22%