-20.1% is the change from 781 to 624
Calculation steps:
[( 624 - 781 ) ÷ 781] x 100 = -20.1%
Formula
Percentage change = [(624 - 781) / 781] x 100
Subtract the new number by the original number
624 - 781 = -157
-157 ÷ 781 = -0.20102432778489115
-0.20102432778489115 x 100 = -20.1%