218.36% is the change from 305 to 971
Calculation steps:
[( 971 - 305 ) ÷ 305] x 100 = 218.36%
Formula
Percentage change = [(971 - 305) / 305] x 100
Subtract the new number by the original number
971 - 305 = 666
666 ÷ 305 = 2.183606557377049
2.183606557377049 x 100 = 218.36%