-34.67% is the change from 949 to 620
Calculation steps:
[( 620 - 949 ) ÷ 949] x 100 = -34.67%
Formula
Percentage change = [(620 - 949) / 949] x 100
Subtract the new number by the original number
620 - 949 = -329
-329 ÷ 949 = -0.3466807165437302
-0.3466807165437302 x 100 = -34.67%