-49.43% is the change from 609 to 308
Calculation steps:
[( 308 - 609 ) ÷ 609] x 100 = -49.43%
Formula
Percentage change = [(308 - 609) / 609] x 100
Subtract the new number by the original number
308 - 609 = -301
-301 ÷ 609 = -0.4942528735632184
-0.4942528735632184 x 100 = -49.43%