-20.13% is the change from 780 to 623
Calculation steps:
[( 623 - 780 ) ÷ 780] x 100 = -20.13%
Formula
Percentage change = [(623 - 780) / 780] x 100
Subtract the new number by the original number
623 - 780 = -157
-157 ÷ 780 = -0.2012820512820513
-0.2012820512820513 x 100 = -20.13%