-72.42% is the change from 921 to 254
Calculation steps:
[( 254 - 921 ) ÷ 921] x 100 = -72.42%
Formula
Percentage change = [(254 - 921) / 921] x 100
Subtract the new number by the original number
254 - 921 = -667
-667 ÷ 921 = -0.7242128121606949
-0.7242128121606949 x 100 = -72.42%