-36.44% is the change from 977 to 621
Calculation steps:
[( 621 - 977 ) ÷ 977] x 100 = -36.44%
Formula
Percentage change = [(621 - 977) / 977] x 100
Subtract the new number by the original number
621 - 977 = -356
-356 ÷ 977 = -0.36438075742067555
-0.36438075742067555 x 100 = -36.44%