-63.39% is the change from 833 to 305
Calculation steps:
[( 305 - 833 ) ÷ 833] x 100 = -63.39%
Formula
Percentage change = [(305 - 833) / 833] x 100
Subtract the new number by the original number
305 - 833 = -528
-528 ÷ 833 = -0.6338535414165666
-0.6338535414165666 x 100 = -63.39%