-25.21% is the change from 817 to 611
Calculation steps:
[( 611 - 817 ) ÷ 817] x 100 = -25.21%
Formula
Percentage change = [(611 - 817) / 817] x 100
Subtract the new number by the original number
611 - 817 = -206
-206 ÷ 817 = -0.2521419828641371
-0.2521419828641371 x 100 = -25.21%