31.46% is the change from 213 to 280
Calculation steps:
[( 280 - 213 ) ÷ 213] x 100 = 31.46%
Formula
Percentage change = [(280 - 213) / 213] x 100
Subtract the new number by the original number
280 - 213 = 67
67 ÷ 213 = 0.3145539906103286
0.3145539906103286 x 100 = 31.46%