-63.87% is the change from 847 to 306
Calculation steps:
[( 306 - 847 ) ÷ 847] x 100 = -63.87%
Formula
Percentage change = [(306 - 847) / 847] x 100
Subtract the new number by the original number
306 - 847 = -541
-541 ÷ 847 = -0.6387249114521841
-0.6387249114521841 x 100 = -63.87%