-25.64% is the change from 815 to 606
Calculation steps:
[( 606 - 815 ) ÷ 815] x 100 = -25.64%
Formula
Percentage change = [(606 - 815) / 815] x 100
Subtract the new number by the original number
606 - 815 = -209
-209 ÷ 815 = -0.25644171779141106
-0.25644171779141106 x 100 = -25.64%