-19.71% is the change from 771 to 619
Calculation steps:
[( 619 - 771 ) ÷ 771] x 100 = -19.71%
Formula
Percentage change = [(619 - 771) / 771] x 100
Subtract the new number by the original number
619 - 771 = -152
-152 ÷ 771 = -0.19714656290531776
-0.19714656290531776 x 100 = -19.71%