-15.53% is the change from 644 to 544
Calculation steps:
[( 544 - 644 ) ÷ 644] x 100 = -15.53%
Formula
Percentage change = [(544 - 644) / 644] x 100
Subtract the new number by the original number
544 - 644 = -100
-100 ÷ 644 = -0.15527950310559005
-0.15527950310559005 x 100 = -15.53%