-64.24% is the change from 839 to 300
Calculation steps:
[( 300 - 839 ) ÷ 839] x 100 = -64.24%
Formula
Percentage change = [(300 - 839) / 839] x 100
Subtract the new number by the original number
300 - 839 = -539
-539 ÷ 839 = -0.6424314660309892
-0.6424314660309892 x 100 = -64.24%