82.46% is the change from 422 to 770
Calculation steps:
[( 770 - 422 ) ÷ 422] x 100 = 82.46%
Formula
Percentage change = [(770 - 422) / 422] x 100
Subtract the new number by the original number
770 - 422 = 348
348 ÷ 422 = 0.8246445497630331
0.8246445497630331 x 100 = 82.46%