142.75% is the change from 276 to 670
Calculation steps:
[( 670 - 276 ) ÷ 276] x 100 = 142.75%
Formula
Percentage change = [(670 - 276) / 276] x 100
Subtract the new number by the original number
670 - 276 = 394
394 ÷ 276 = 1.4275362318840579
1.4275362318840579 x 100 = 142.75%