-33.08% is the change from 928 to 621
Calculation steps:
[( 621 - 928 ) ÷ 928] x 100 = -33.08%
Formula
Percentage change = [(621 - 928) / 928] x 100
Subtract the new number by the original number
621 - 928 = -307
-307 ÷ 928 = -0.3308189655172414
-0.3308189655172414 x 100 = -33.08%