-10.19% is the change from 913 to 820
Calculation steps:
[( 820 - 913 ) ÷ 913] x 100 = -10.19%
Formula
Percentage change = [(820 - 913) / 913] x 100
Subtract the new number by the original number
820 - 913 = -93
-93 ÷ 913 = -0.10186199342825848
-0.10186199342825848 x 100 = -10.19%