57.89% is the change from 266 to 420
Calculation steps:
[( 420 - 266 ) ÷ 266] x 100 = 57.89%
Formula
Percentage change = [(420 - 266) / 266] x 100
Subtract the new number by the original number
420 - 266 = 154
154 ÷ 266 = 0.5789473684210527
0.5789473684210527 x 100 = 57.89%