-16.8% is the change from 774 to 644
Calculation steps:
[( 644 - 774 ) ÷ 774] x 100 = -16.8%
Formula
Percentage change = [(644 - 774) / 774] x 100
Subtract the new number by the original number
644 - 774 = -130
-130 ÷ 774 = -0.16795865633074936
-0.16795865633074936 x 100 = -16.8%