266.36% is the change from 214 to 784
Calculation steps:
[( 784 - 214 ) ÷ 214] x 100 = 266.36%
Formula
Percentage change = [(784 - 214) / 214] x 100
Subtract the new number by the original number
784 - 214 = 570
570 ÷ 214 = 2.663551401869159
2.663551401869159 x 100 = 266.36%