-34.02% is the change from 973 to 642
Calculation steps:
[( 642 - 973 ) ÷ 973] x 100 = -34.02%
Formula
Percentage change = [(642 - 973) / 973] x 100
Subtract the new number by the original number
642 - 973 = -331
-331 ÷ 973 = -0.34018499486125386
-0.34018499486125386 x 100 = -34.02%