-16.19% is the change from 766 to 642
Calculation steps:
[( 642 - 766 ) ÷ 766] x 100 = -16.19%
Formula
Percentage change = [(642 - 766) / 766] x 100
Subtract the new number by the original number
642 - 766 = -124
-124 ÷ 766 = -0.1618798955613577
-0.1618798955613577 x 100 = -16.19%