-70.14% is the change from 921 to 275
Calculation steps:
[( 275 - 921 ) ÷ 921] x 100 = -70.14%
Formula
Percentage change = [(275 - 921) / 921] x 100
Subtract the new number by the original number
275 - 921 = -646
-646 ÷ 921 = -0.7014115092290988
-0.7014115092290988 x 100 = -70.14%