-29.82% is the change from 919 to 645
Calculation steps:
[( 645 - 919 ) ÷ 919] x 100 = -29.82%
Formula
Percentage change = [(645 - 919) / 919] x 100
Subtract the new number by the original number
645 - 919 = -274
-274 ÷ 919 = -0.2981501632208923
-0.2981501632208923 x 100 = -29.82%