Once my debt / credit limit ratio on my credit cards got below 50 %, my score jumped 30 points. (debtkid.com)
Opening up additional cards increased my overall credit, as well as reduced my overall spending to credit limit ratio since I made the same amount of purchases over more cards — both things that helped my credit score and likely cancelled out any negative effects. (personalfinanceinsider.com)
As a result, you will be raising your debt to credit limit ratio. (pennymacusa.com)