80% is the change from 370 to 666
Calculation steps:
[( 666 - 370 ) ÷ 370] x 100 = 80%
Formula
Percentage change = [(666 - 370) / 370] x 100
Subtract the new number by the original number
666 - 370 = 296
296 ÷ 370 = 0.8
0.8 x 100 = 80%
Example