-66.02% is the change from 921 to 313
Calculation steps:
[( 313 - 921 ) ÷ 921] x 100 = -66.02%
Formula
Percentage change = [(313 - 921) / 921] x 100
Subtract the new number by the original number
313 - 921 = -608
-608 ÷ 921 = -0.6601520086862106
-0.6601520086862106 x 100 = -66.02%