-16.04% is the change from 767 to 644
Calculation steps:
[( 644 - 767 ) ÷ 767] x 100 = -16.04%
Formula
Percentage change = [(644 - 767) / 767] x 100
Subtract the new number by the original number
644 - 767 = -123
-123 ÷ 767 = -0.16036505867014342
-0.16036505867014342 x 100 = -16.04%