-19.07% is the change from 771 to 624
Calculation steps:
[( 624 - 771 ) ÷ 771] x 100 = -19.07%
Formula
Percentage change = [(624 - 771) / 771] x 100
Subtract the new number by the original number
624 - 771 = -147
-147 ÷ 771 = -0.19066147859922178
-0.19066147859922178 x 100 = -19.07%