97.63% is the change from 337 to 666
Calculation steps:
[( 666 - 337 ) ÷ 337] x 100 = 97.63%
Formula
Percentage change = [(666 - 337) / 337] x 100
Subtract the new number by the original number
666 - 337 = 329
329 ÷ 337 = 0.9762611275964391
0.9762611275964391 x 100 = 97.63%