-25.9% is the change from 417 to 309
Calculation steps:
[( 309 - 417 ) ÷ 417] x 100 = -25.9%
Formula
Percentage change = [(309 - 417) / 417] x 100
Subtract the new number by the original number
309 - 417 = -108
-108 ÷ 417 = -0.2589928057553957
-0.2589928057553957 x 100 = -25.9%