-53.5% is the change from 643 to 299
Calculation steps:
[( 299 - 643 ) ÷ 643] x 100 = -53.5%
Formula
Percentage change = [(299 - 643) / 643] x 100
Subtract the new number by the original number
299 - 643 = -344
-344 ÷ 643 = -0.5349922239502333
-0.5349922239502333 x 100 = -53.5%