2970% is the change from 10 to 307
Calculation steps:
[( 307 - 10 ) ÷ 10] x 100 = 2970%
Formula
Percentage change = [(307 - 10) / 10] x 100
Subtract the new number by the original number
307 - 10 = 297
297 ÷ 10 = 29.7
29.7 x 100 = 2970%
Example