-36.61% is the change from 978 to 620
Calculation steps:
[( 620 - 978 ) ÷ 978] x 100 = -36.61%
Formula
Percentage change = [(620 - 978) / 978] x 100
Subtract the new number by the original number
620 - 978 = -358
-358 ÷ 978 = -0.3660531697341513
-0.3660531697341513 x 100 = -36.61%