-36.57% is the change from 979 to 621
Calculation steps:
[( 621 - 979 ) ÷ 979] x 100 = -36.57%
Formula
Percentage change = [(621 - 979) / 979] x 100
Subtract the new number by the original number
621 - 979 = -358
-358 ÷ 979 = -0.36567926455566907
-0.36567926455566907 x 100 = -36.57%