83.56% is the change from 511 to 938
Calculation steps:
[( 938 - 511 ) ÷ 511] x 100 = 83.56%
Formula
Percentage change = [(938 - 511) / 511] x 100
Subtract the new number by the original number
938 - 511 = 427
427 ÷ 511 = 0.8356164383561644
0.8356164383561644 x 100 = 83.56%