35.57% is the change from 253 to 343
Calculation steps:
[( 343 - 253 ) ÷ 253] x 100 = 35.57%
Formula
Percentage change = [(343 - 253) / 253] x 100
Subtract the new number by the original number
343 - 253 = 90
90 ÷ 253 = 0.3557312252964427
0.3557312252964427 x 100 = 35.57%