-20.54% is the change from 784 to 623
Calculation steps:
[( 623 - 784 ) ÷ 784] x 100 = -20.54%
Formula
Percentage change = [(623 - 784) / 784] x 100
Subtract the new number by the original number
623 - 784 = -161
-161 ÷ 784 = -0.20535714285714285
-0.20535714285714285 x 100 = -20.54%