-63.78% is the change from 842 to 305
Calculation steps:
[( 305 - 842 ) ÷ 842] x 100 = -63.78%
Formula
Percentage change = [(305 - 842) / 842] x 100
Subtract the new number by the original number
305 - 842 = -537
-537 ÷ 842 = -0.6377672209026128
-0.6377672209026128 x 100 = -63.78%