-48.64% is the change from 664 to 341
Calculation steps:
[( 341 - 664 ) ÷ 664] x 100 = -48.64%
Formula
Percentage change = [(341 - 664) / 664] x 100
Subtract the new number by the original number
341 - 664 = -323
-323 ÷ 664 = -0.4864457831325301
-0.4864457831325301 x 100 = -48.64%