-70.47% is the change from 921 to 272
Calculation steps:
[( 272 - 921 ) ÷ 921] x 100 = -70.47%
Formula
Percentage change = [(272 - 921) / 921] x 100
Subtract the new number by the original number
272 - 921 = -649
-649 ÷ 921 = -0.7046688382193268
-0.7046688382193268 x 100 = -70.47%