-72.76% is the change from 815 to 222
Calculation steps:
[( 222 - 815 ) ÷ 815] x 100 = -72.76%
Formula
Percentage change = [(222 - 815) / 815] x 100
Subtract the new number by the original number
222 - 815 = -593
-593 ÷ 815 = -0.7276073619631902
-0.7276073619631902 x 100 = -72.76%