-21.2% is the change from 349 to 275
Calculation steps:
[( 275 - 349 ) ÷ 349] x 100 = -21.2%
Formula
Percentage change = [(275 - 349) / 349] x 100
Subtract the new number by the original number
275 - 349 = -74
-74 ÷ 349 = -0.21203438395415472
-0.21203438395415472 x 100 = -21.2%