-8.77% is the change from 821 to 749
Calculation steps:
[( 749 - 821 ) ÷ 821] x 100 = -8.77%
Formula
Percentage change = [(749 - 821) / 821] x 100
Subtract the new number by the original number
749 - 821 = -72
-72 ÷ 821 = -0.0876979293544458
-0.0876979293544458 x 100 = -8.77%