-34.62% is the change from 982 to 642
Calculation steps:
[( 642 - 982 ) ÷ 982] x 100 = -34.62%
Formula
Percentage change = [(642 - 982) / 982] x 100
Subtract the new number by the original number
642 - 982 = -340
-340 ÷ 982 = -0.34623217922606925
-0.34623217922606925 x 100 = -34.62%