-66% is the change from 994 to 338
Calculation steps:
[( 338 - 994 ) ÷ 994] x 100 = -66%
Formula
Percentage change = [(338 - 994) / 994] x 100
Subtract the new number by the original number
338 - 994 = -656
-656 ÷ 994 = -0.6599597585513078
-0.6599597585513078 x 100 = -66%