-26.17% is the change from 921 to 680
Calculation steps:
[( 680 - 921 ) ÷ 921] x 100 = -26.17%
Formula
Percentage change = [(680 - 921) / 921] x 100
Subtract the new number by the original number
680 - 921 = -241
-241 ÷ 921 = -0.26167209554831705
-0.26167209554831705 x 100 = -26.17%