-64.34% is the change from 861 to 307
Calculation steps:
[( 307 - 861 ) ÷ 861] x 100 = -64.34%
Formula
Percentage change = [(307 - 861) / 861] x 100
Subtract the new number by the original number
307 - 861 = -554
-554 ÷ 861 = -0.6434378629500581
-0.6434378629500581 x 100 = -64.34%