293.02% is the change from 215 to 845
Calculation steps:
[( 845 - 215 ) ÷ 215] x 100 = 293.02%
Formula
Percentage change = [(845 - 215) / 215] x 100
Subtract the new number by the original number
845 - 215 = 630
630 ÷ 215 = 2.9302325581395348
2.9302325581395348 x 100 = 293.02%