-41.07% is the change from 577 to 340
Calculation steps:
[( 340 - 577 ) ÷ 577] x 100 = -41.07%
Formula
Percentage change = [(340 - 577) / 577] x 100
Subtract the new number by the original number
340 - 577 = -237
-237 ÷ 577 = -0.41074523396880414
-0.41074523396880414 x 100 = -41.07%