-66.1% is the change from 997 to 338
Calculation steps:
[( 338 - 997 ) ÷ 997] x 100 = -66.1%
Formula
Percentage change = [(338 - 997) / 997] x 100
Subtract the new number by the original number
338 - 997 = -659
-659 ÷ 997 = -0.6609829488465396
-0.6609829488465396 x 100 = -66.1%