212.09% is the change from 91 to 284
Calculation steps:
[( 284 - 91 ) ÷ 91] x 100 = 212.09%
Formula
Percentage change = [(284 - 91) / 91] x 100
Subtract the new number by the original number
284 - 91 = 193
193 ÷ 91 = 2.120879120879121
2.120879120879121 x 100 = 212.09%