-51.43% is the change from 628 to 305
Calculation steps:
[( 305 - 628 ) ÷ 628] x 100 = -51.43%
Formula
Percentage change = [(305 - 628) / 628] x 100
Subtract the new number by the original number
305 - 628 = -323
-323 ÷ 628 = -0.5143312101910829
-0.5143312101910829 x 100 = -51.43%