-21.08% is the change from 906 to 715
Calculation steps:
[( 715 - 906 ) ÷ 906] x 100 = -21.08%
Formula
Percentage change = [(715 - 906) / 906] x 100
Subtract the new number by the original number
715 - 906 = -191
-191 ÷ 906 = -0.2108167770419426
-0.2108167770419426 x 100 = -21.08%