-33.51% is the change from 934 to 621
Calculation steps:
[( 621 - 934 ) ÷ 934] x 100 = -33.51%
Formula
Percentage change = [(621 - 934) / 934] x 100
Subtract the new number by the original number
621 - 934 = -313
-313 ÷ 934 = -0.3351177730192719
-0.3351177730192719 x 100 = -33.51%