32.09% is the change from 215 to 284
Calculation steps:
[( 284 - 215 ) ÷ 215] x 100 = 32.09%
Formula
Percentage change = [(284 - 215) / 215] x 100
Subtract the new number by the original number
284 - 215 = 69
69 ÷ 215 = 0.3209302325581395
0.3209302325581395 x 100 = 32.09%