-62.05% is the change from 809 to 307
Calculation steps:
[( 307 - 809 ) ÷ 809] x 100 = -62.05%
Formula
Percentage change = [(307 - 809) / 809] x 100
Subtract the new number by the original number
307 - 809 = -502
-502 ÷ 809 = -0.6205191594561187
-0.6205191594561187 x 100 = -62.05%