-62.92% is the change from 828 to 307
Calculation steps:
[( 307 - 828 ) ÷ 828] x 100 = -62.92%
Formula
Percentage change = [(307 - 828) / 828] x 100
Subtract the new number by the original number
307 - 828 = -521
-521 ÷ 828 = -0.6292270531400966
-0.6292270531400966 x 100 = -62.92%