-64.99% is the change from 857 to 300
Calculation steps:
[( 300 - 857 ) ÷ 857] x 100 = -64.99%
Formula
Percentage change = [(300 - 857) / 857] x 100
Subtract the new number by the original number
300 - 857 = -557
-557 ÷ 857 = -0.6499416569428238
-0.6499416569428238 x 100 = -64.99%