34.53% is the change from 669 to 900
Calculation steps:
[( 900 - 669 ) ÷ 669] x 100 = 34.53%
Formula
Percentage change = [(900 - 669) / 669] x 100
Subtract the new number by the original number
900 - 669 = 231
231 ÷ 669 = 0.3452914798206278
0.3452914798206278 x 100 = 34.53%