-66.5% is the change from 997 to 334
Calculation steps:
[( 334 - 997 ) ÷ 997] x 100 = -66.5%
Formula
Percentage change = [(334 - 997) / 997] x 100
Subtract the new number by the original number
334 - 997 = -663
-663 ÷ 997 = -0.6649949849548646
-0.6649949849548646 x 100 = -66.5%