-49.43% is the change from 613 to 310
Calculation steps:
[( 310 - 613 ) ÷ 613] x 100 = -49.43%
Formula
Percentage change = [(310 - 613) / 613] x 100
Subtract the new number by the original number
310 - 613 = -303
-303 ÷ 613 = -0.49429037520391517
-0.49429037520391517 x 100 = -49.43%