-50.58% is the change from 690 to 341
Calculation steps:
[( 341 - 690 ) ÷ 690] x 100 = -50.58%
Formula
Percentage change = [(341 - 690) / 690] x 100
Subtract the new number by the original number
341 - 690 = -349
-349 ÷ 690 = -0.5057971014492754
-0.5057971014492754 x 100 = -50.58%