-52.26% is the change from 643 to 307
Calculation steps:
[( 307 - 643 ) ÷ 643] x 100 = -52.26%
Formula
Percentage change = [(307 - 643) / 643] x 100
Subtract the new number by the original number
307 - 643 = -336
-336 ÷ 643 = -0.5225505443234837
-0.5225505443234837 x 100 = -52.26%