-20.51% is the change from 902 to 717
Calculation steps:
[( 717 - 902 ) ÷ 902] x 100 = -20.51%
Formula
Percentage change = [(717 - 902) / 902] x 100
Subtract the new number by the original number
717 - 902 = -185
-185 ÷ 902 = -0.20509977827050999
-0.20509977827050999 x 100 = -20.51%