-62.19% is the change from 812 to 307
Calculation steps:
[( 307 - 812 ) ÷ 812] x 100 = -62.19%
Formula
Percentage change = [(307 - 812) / 812] x 100
Subtract the new number by the original number
307 - 812 = -505
-505 ÷ 812 = -0.6219211822660099
-0.6219211822660099 x 100 = -62.19%