-63.82% is the change from 843 to 305
Calculation steps:
[( 305 - 843 ) ÷ 843] x 100 = -63.82%
Formula
Percentage change = [(305 - 843) / 843] x 100
Subtract the new number by the original number
305 - 843 = -538
-538 ÷ 843 = -0.638196915776987
-0.638196915776987 x 100 = -63.82%