-15.73% is the change from 763 to 643
Calculation steps:
[( 643 - 763 ) ÷ 763] x 100 = -15.73%
Formula
Percentage change = [(643 - 763) / 763] x 100
Subtract the new number by the original number
643 - 763 = -120
-120 ÷ 763 = -0.15727391874180865
-0.15727391874180865 x 100 = -15.73%