-15.4% is the change from 766 to 648
Calculation steps:
[( 648 - 766 ) ÷ 766] x 100 = -15.4%
Formula
Percentage change = [(648 - 766) / 766] x 100
Subtract the new number by the original number
648 - 766 = -118
-118 ÷ 766 = -0.15404699738903394
-0.15404699738903394 x 100 = -15.4%