-63.76% is the change from 861 to 312
Calculation steps:
[( 312 - 861 ) ÷ 861] x 100 = -63.76%
Formula
Percentage change = [(312 - 861) / 861] x 100
Subtract the new number by the original number
312 - 861 = -549
-549 ÷ 861 = -0.6376306620209059
-0.6376306620209059 x 100 = -63.76%