218.57% is the change from 307 to 978
Calculation steps:
[( 978 - 307 ) ÷ 307] x 100 = 218.57%
Formula
Percentage change = [(978 - 307) / 307] x 100
Subtract the new number by the original number
978 - 307 = 671
671 ÷ 307 = 2.185667752442997
2.185667752442997 x 100 = 218.57%