81.99% is the change from 422 to 768
Calculation steps:
[( 768 - 422 ) ÷ 422] x 100 = 81.99%
Formula
Percentage change = [(768 - 422) / 422] x 100
Subtract the new number by the original number
768 - 422 = 346
346 ÷ 422 = 0.8199052132701422
0.8199052132701422 x 100 = 81.99%