-15.86% is the change from 763 to 642
Calculation steps:
[( 642 - 763 ) ÷ 763] x 100 = -15.86%
Formula
Percentage change = [(642 - 763) / 763] x 100
Subtract the new number by the original number
642 - 763 = -121
-121 ÷ 763 = -0.15858453473132372
-0.15858453473132372 x 100 = -15.86%