-15.42% is the change from 765 to 647
Calculation steps:
[( 647 - 765 ) ÷ 765] x 100 = -15.42%
Formula
Percentage change = [(647 - 765) / 765] x 100
Subtract the new number by the original number
647 - 765 = -118
-118 ÷ 765 = -0.1542483660130719
-0.1542483660130719 x 100 = -15.42%