-25.8% is the change from 810 to 601
Calculation steps:
[( 601 - 810 ) ÷ 810] x 100 = -25.8%
Formula
Percentage change = [(601 - 810) / 810] x 100
Subtract the new number by the original number
601 - 810 = -209
-209 ÷ 810 = -0.2580246913580247
-0.2580246913580247 x 100 = -25.8%