-6.92% is the change from 838 to 780
Calculation steps:
[( 780 - 838 ) ÷ 838] x 100 = -6.92%
Formula
Percentage change = [(780 - 838) / 838] x 100
Subtract the new number by the original number
780 - 838 = -58
-58 ÷ 838 = -0.06921241050119331
-0.06921241050119331 x 100 = -6.92%