You can calculate that for yourself by deciding what revs concern you for your typical riding. A quick reference is that one tooth down on the front usually falls between 2 and 3 teeth up on the rear and changing one end or the other is usually about a 6 percent change. To know for sure, you should calculate it using your exact number of sprocket teeth. With that number, in percent of change, you can use the percentage to calculate speedo error, RPM increase, etc. They will all change by that percentage. Hope it helps.
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