-63.79% is the change from 845 to 306
Calculation steps:
[( 306 - 845 ) ÷ 845] x 100 = -63.79%
Formula
Percentage change = [(306 - 845) / 845] x 100
Subtract the new number by the original number
306 - 845 = -539
-539 ÷ 845 = -0.6378698224852071
-0.6378698224852071 x 100 = -63.79%