-22.37% is the change from 921 to 715
Calculation steps:
[( 715 - 921 ) ÷ 921] x 100 = -22.37%
Formula
Percentage change = [(715 - 921) / 921] x 100
Subtract the new number by the original number
715 - 921 = -206
-206 ÷ 921 = -0.22366992399565688
-0.22366992399565688 x 100 = -22.37%